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Finding the Fourth Proportional to 47.08, 69.98 and 46.12

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Solution

The fourth proportional to 47.08, 69.98 and 46.12 is: 68.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    47.08 : 69.98 = 46.12 : x
  2. Step 2: Convert to fraction form
    47.08/69.98 = 46.12/x
  3. Step 3: Cross multiply
    47.08x = 69.98 × 46.12
  4. Step 4: Simplify right side
    47.08x = 3,227.48
  5. Step 5: Solve for x
    x = 3,227.48/47.08
  6. Step 6: Final answer
    x = 68.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.